Just travelled from Dali to Lijiang. Each coach was "connected" to the next by a yellow plastic strip with red writing at waist height. These were removed at Lijiang. Never seen these before ... possibly peculiar to this route (or Yunnan). They clearly form no physical junction but, I guess, are some form of warning. Would be a detail for modelling

Cheers,

Mark

PS stock for Kunming-Lijiang is 25 a/c with generator. Locos SS7c in an all-over yellow. A green df4 was parked up at Lijiang.